What are the effects on the graph of y=x^2 caused by the values of a, h, and k in the function y=a(x-h)^2+k

Both the red and blue line segments stretch from the center of the circle to a point on the circle. the length of the blue segment is 5. how long is the red line segment?

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

Credit card a offers an introductory apr of 3.4% for the first three months and standard apr of 15.7% thereafter,